Feakcis f



(No Model.)

F. F. HEYSE & J. P. TUERLINGX.

Watch Case Opener.

No. 236,948. Patented Jan. 25, 1881.

dig. 4.

UNITED STATES PATENT OEEIcE.

FRANCIS F. HEYSE AND JOHN P. TUERLINGX, OF BROOKLYN, E. D., N. Y.

WATCH-CASE OPENER.

SPECIFICATION forming part of Letters Patent No. 236,948, dated January25, 1881. Application filed J 11110 21, 1880. (No model.)

To all whom it may concern Be it known that we, FRANCIS F. HEYSE andJOHN P. TUERLINGX, ofBrooklyn, E. 1)., in the county of Kings and Stateof NewYork, have invented an Improvement in Watch- Oase Openers, ofwhich the followingis a specification.

This improvement is especially adapted to watches in which the glass isopened to give access to the hands for setting the same; but theimprovement is available in other cases, and may be used for openingeither of the lids of the watch or for opening the bezel of the glass.

In all watch-cases it is important that dustbe excluded from the works,and it is found in practice that this can only be accomplished byfitting the lids or bezel tightly. When this is done the case cannot beeasily opened, and the fingernails are often injured in attempts to pryopen the case. A knife is frequently resorted to, and the case is marredand injured by the same.

Our invention relates to the combination, with the case, of awedge-lever attached to the watch, and placed so that by moving thelever the wedge is pressed in between the parts of the case to forcethem apart and open the watch. By this means the case can be opened withreliability, regardless of the tightness with which the parts of thecase close, and the case is not injured by the action of the wedgelever,because it is in a fixed position and not liable to slip and scratch theparts.

In the drawings, Figure 1 represents a watch with a portion of the faceand glass removed to show the wedge-lever, and Fig. 2 is a verticalsection at the line :20 0c.

The watch-case is to be of any desired size 0 or character.

The drawings represent a watch with a center portion, a, lid Z), bezel0, glass (7, and face.

The wedge-lever Z is of a size suitable for the case, and it is upon afulcrum screw or pin, h, and extends to the thumb-piece i for moving thelever, and c is the wedge that projects at one side of the lever. Thewedge c is to be adjacent to the joint between the lid and the body ofthe watch-case, or else it is to be adjacent to the bezel or ring of thewatch-glass when closed.

The thumb-piece is preferably in the form of an arc of a circle with apin at the end, and this are passes through a notch in the bezel or rimof the case, the pin being at the outer end thereof, so that the leveris drawn upon by pulling the arc-piece and swinging the lever so thatits wedge e is forced in between the parts of the case that are to beseparated in opening the watch.

The spring 8 is used to return the lever to its normal position.

It will be apparent that the lever may have the fulcrum between thewedge and the thumbpiece, and in that case the direction of motion wouldbe varied, and under all circumstances the lever is of a size and shapeto suit the place into which itis introduced in the watch'case.

\Ve claim as our invention- The combination, with the watch-case, of awedge-lever adapted to be moved by the finger, and placed so that thewedge acts between two of the parts of the case to open the watch,substantially as set forth.

Signed by us this 18th day of June, A. D. 1880.

FRANCIS F. HEYSE. JOHN P. TUERLINGX. Witnesses:

GEo. T. PINCKNEY, HAROLD SERRELL.

